Porsche's difference is that they don't lock things down to options packages (bundles, i.e. Mercedes' Premium Package I/II/III). If you want the digital instrum

Porsche's difference is that they don't lock things down to options packages (bundles, i.e. Mercedes' Premium Package I/II/III). If you want the digital instrument cluster on your new E-class, you get the fragrance system along with it in Premium Package II even if you're ordering a custom build. The limitations are really noticeable when you start looking at wheel options with most manufacturers. Porsche just throws a massive options sheet at you and lets you go to town. You get the exact car you want on a granular level. On the other hand, that's also a disadvantage. If you have deviated stitching everywhere else and tick off the "Steering Column Casing in Leather" option instead of "Steering Column Casing in Leather with Stitching in Deviated Thread" the steering column, Porsche will accept the order but won't substitute the stitching for you. You get exactly what you order, good or bad. And there have been some pretty ugly combinations ordered in the past. Want a Miami Blue exterior, matching wheels in the same, a bright red leather with acid green stitching, wood trim, a carbon fiber shifter, etc.? You can order it. You really, really shouldn't. But you can. You'll also pay for it. The average customer will order something like $10-15k in options, and more Porsche buyers special order compared to other brands. Porsche dealers tend to have less inventory on hand as a result as well.